Cap for radiators



P. M. GELATT.

GAP FOR RADIATORS. APPLICATION FILED 050,13, m9.

1,358,307; Patented News, 1920.,

UNITED STATES PHILO M. GELATT, OF LA CROSSE, WISCONSIN.

CAP FOR RADIATORS.

Specification of Letters Patent.

Patented Nov. 9, 1920.

Application filed December 18, 1919. Serial No. 345,741.

T 0 all whom it may concern:

Be it known that I, PHILO M. GELATT, a citizen of the United States, residing at La Crosse, in the county of La Crosse and State of l/Visconsin, have invented certain new and useful Improvements inCaps for Radiators, of which the following is a specification.

This invention relates to improvements in caps for the radiators of cooling sys tems for internal combustion engines for motor vehicles.

The object of the invention is to provide a metal cap so constructed as to prevent the cap from unduly heating with the consequent difliculties arising therefrom.

A further and more specific object of the invention is to provide a cap constructed of metal so arranged that a cooling current of air may be circulated through the interior of the cap.

In the accompanying drawings Figure l is a top plan view of a portion of the upper part of the radiator of a cooling system showing my improved cap applied thereto partly broken away and shown in section.

Fig. 2 is a vertical section of the same.

Fig. 3 is a vertical section of a modification in the form of the cap.

In the said drawings, 1 represents a portion of the upper part of the radiator of a cooling system for internal combustion engines; 2 the neck having the opening through which the water is supplied; 3 the usual drain pipe; and 4 a strainer; the parts being constructed in the usual way.

Referring to Figs. 1 and 2, 5 represents the main body portion of the cap and 6 an integrally-formed interiorly threaded flange; the cap and its flange being in the present case constructed of sheet metal which may be pressed or stamped to the proper form so as to provide a metallic cap which will have a hollow body. The periphery of the cap is preferably knurled or formed with indentations 7 so 'that it may be conveniently grasped for the purpose of turning it on or off of the threads of the neck.

For the purpose of providing for a circulation of air through the main body of the cap, the wall of the outer periphery thereof is provided with a series of openings 8 and the lower wall of the cap about the flange 6 is also provided with a series of openings 9. A partition 10 is inserted in the upper portion of the cylindrical flange 6 and secured thereto in any suitable manner so as to prevent the steam from the water in the radiator entering the interior of the main body portion of the cap to prevent heat radiation; this part 10 being formed of some non-heat-conducting material, such as hard rubber.

By thus constructing the capit will be seen that the disadvantages incident to the construction of a metal cap are largely obviated by the provision for protecting the cap against heat. By keeping the main body of the cap in a cool condition by the circulation of air, the threaded flange 6, as well as the threaded portion of the neck, is also cooled by conductivity so that but a minimum amount of expansion and contraction will be had.

In Fig. 3 is shown a modification in which 5 represents the main body of the cap and 5 an extended flange formed integrally therewith; the cap and flange being formed of metal, preferably sheet metal, stamped or pressed to shape. ,The main body of the cap in this case is also provided with openings 8 and 9 Inserted within the flange 5 and held in position therein in any suitable manner is an interiorly-threaded cup-shaped auxiliary cap 11, the upper end being closed as shown and terminating substantially at the point where the flange 5 begins so that the interior of the main body portion of the cap will be hollow. This auxiliary cap may be formed'of suitable material having a low conductivity for heat and the upper closed end thereof forms a partition between the main hollow body of the cap and the radiator.

aving thus described my invention I claim 1. In a cooling system for internal combustion engines, a radiator water supply part, a manually rotatable metallic cap for from the surrounding atmosphere into the interior of said chamber.

3. In a structure of the character described, a manually rotatable metallic cap formed with a hollow chamber closed at its bottom, the walls thereof having a series of openings arranged in different transverse planes so as to create a circulation of the surrounding air through the interior of said cap, for the purpose specified.

4. In a structure of the character described, a metallic cap formed with a main body portion having a hollow interior and a threaded flange, the main body portion of said cap having a plurality of openings leading to the atmosphere, and a fluid tight partition closing the opening through said flange to the interior of said cap;

5. In a cooling system for internal combustion engines, a threaded radiator IIGClQ'it .metallic cap for closing said neck, said cap consisting of a main hollow body portion and a flange threaded on said neck, said main body portion also having a plurality of openings arranged in different transverse planes leading to and from the atmosphere.

6. In a cooling system for internal combustion engines, a radiator water supply part, a removable cap for said part designed to be grasped manually in removing the same, said'cap being formed of a hollow PHILO M. GELATT;

VJitnesse s i C. A. Fianna, J. M. LA VAQUE. 

